Tire-core.



E. E. TANNAR.

' TIRE CORE..

APPLICATION FILED MAR. I2. 1914.

1,157,263. Patented 061.1211915.

WTA/'555551 IAmSwTa/s; 'i

IFEARLE TANNAR.-OFLAKRON, OHO.-

TIRE-conn.

Specification of Letters Patent. i Y y, Patentd 001i, 1915;

` ,Y Application filed March 12, 1914.V Serial No. 824,127. Y

vrBe it'kn'ownthat I, EARLE E. TANNAma citizen ofthe United States,- residing at Akron, in thecounty of Summit and State of4 Ohio, rhave inventeda certain" new: and useful Improvement in Tire-Cores,"ofwhich the-followingfi's afulhclear, and exactdescription, reference being hadA to` the accomf panying drawings.

-f This invention relates to molds `for vehicle tires and `more particularly to the core portions of such molds. Y

Y AS iwan komm to uwseskined in uns art, the cores of'molds of thisftype are made up 'of afp'lurality of segments andtheend faces of-'oneof theseg'ments are defined by planes-which extendparallel to each other,

whereby the core may be'conveniently col-` ylapsed merely by moving this segment inwardly within the annular space defined by the n asseln'bled core segments. .1. v

As isa-lso wellknown, it 1s customary to `assemblethe ycoresegments by kmeans 'of a gathering'ring fitted rinto segmental wann-ularf recesses -in the inner shoulders of the segments, said recesses', vwhen the segments are assembled, forming av'complete l.annulus extending aroundv one of the lateral faces of the inner shouldered portion of the core.

It is thegeneralpurposeof this invention 'to provide means whereby the core segments `may be more convenientlyand effectively assembled and disassembled, and whereby the life 'and effectiveness ofthe gathering ring may be increasedand extended.

v In the .drawings forming part hereof, Figure 1 represents a side elevation of acore of the character referred to having my newgathering ring applied thereto; Fig. 2 is a sectional view, corresponding to the l1ne2-2 of Fig. 1, showing the parts ofthe gathering ring in the position which they assume when the ring is driven home; and Fig. 3

is a similar ,viewy showing the positions of the parts of the ringimmediately after the insertion of the ring into its groove or recess. v r

Describing the' parts by reference charac-V ters, 1', 2, '3 and l denote thesegments of a core, which core, with the exception .to be noted hereinafter', is of ordinary or standard construction. y The segment 4v is provided with the parallel faces 5v whichrenable 1 tlto be moved inwardly,k when the gathering ring is removed, to facilitate the collapse of the core. Each segment is provided in its 'innernular recess for the core.

shouldered portion with a recess 6. This re-` cess projects inwardly from one face of the shoulder and is arcuate in shape, therecesses ofV the segments uniting, when the,seg ments are assembled, to formv a complete anofthe recess is straight or cylindrical; that is to{ say, it projects -atright-angles kto the face `9 of thel inner shoulder of the core section.- The inner face 8..(that is, the face which Ais towardthe center of the core) is bevel, whereby the recess is wedge-shapedr in section. The .gathering ring which I employ -with this construction is av Aring which is alsowedgeshapedin section, but which The outer face 7 consists ofatwo parts, namely: an outer cylindrical ring section andan inner ring section. The outer ring section 10 has a ver- .tical orstraightcylindrical -face 11 coperating with the corresponding outer face 7 of the recess, whilethe inner facelQ vofthe outer ring .section is substantially parallel to theface 1l, but is kprovided with a'recess or groove 13 extending entirely around the inner face ofthe yring.- Coperating with the inner-,face ofthe outer ring section is the innerring section 14. lThis inner ring section is itselfa split ring having a. straight or vertical cylindrical face 15 adapted to fit against the correspondingface l2 of the outer :ring section and provided with a tongue 16 adapted to enter the groove or recess 13, but

of considerably less width'than said groove or recess. The inner face 17 of the inner ring section 14% is beveled to correspond to Vtion finds the tapered surfaces of the segmental recesses 6 and assists in gathering After the lower end the segments together. of the inner ring section has been thus applied,the operator drives the ring home by tapping upon the outer section 10, the parts finally assuming the position shown in Fig. 2.

In addition to the advantage secured through the lgathering operation, the ring assembly vis advantageous ject'ed to wear throughsuch friction isone Athat vcan be cheaply and conveniently replacedpyi Having thus described my: invention, what Ivclaim iszv si 1;V The combination, with .a plurality of coresegmentseach having an arcuate recess therein. onefof the lateral` surfaces; whereof is tapered orinclinedfand adapted, when-the segments are assembled, to forma. complete annular recess,v of an outer ring section land an inner ring-'section adapted to be inserted into/said recess, one,V of said :ringsectio'ns beingcontinuous and the otherjsection being a split ring, one'of said ring sections having a vsurfacein'clined complementar-ilyv :to the y inclined: surace'of the' rece'ss,`and a lostmotion connection between the inner outer ring sectlons.

and the 2.The combination, iwith a :plurality of g core' segments each having anarcuate recess therein the inner surface whereof is tapered Vor rinclined vand adapted,g.when the -s'eoin'ents are assembled, to form a' complete. annular recess, oan louter ring sectionV and an inner r ring section adaptedfto be inserted -into said recess, the outer ring section being continu- 35'LV Yring,'theV inner Vsurface whereof` is inclined ous andthe inner ring section being a split .complementarily to the v'inclined Vsurface V of Copies ofths parten'tjmay beobrtainedy for the recess, and aflost-'motionn connection be Y tween theinner and the outer ring sections",

3; 'rllh'ejcombi'nation,l with a plurality of coreseg'ments eachhaving an--arcua'te recess i the inner face whereofis inclined and adapt# ed, when Vthe segments arel assembled, to

form a complete annularV recess, offaringcooperating withgsaid recess,'1 said ring' 'com v prising an outer continuousv ring of 'less' width than said recess-andan innerjsplit ring having its inner sur-face inclined i complementarily to the 'inclined surface of the recess, oneof said ringdsections;beingopro vided withY atongueand the otlieiwitha groove ofgreater width--thansaid tong-ne,

wherebyv f a lost-motion connecti onf-V isj profV vided between.saidsections.y

4, The combination, with afiplurality ofV corev segments4 havlng an arcuate' recess one j of the 1n'nerAaces-whereofis'lnchned and:

adapted, when Y the segments. areassembled,

to form a-complete annular recess, of'a ring coperatingwith said recess, said yring comprising a continuous ring oi less :width-'than f said recess anda split ringhaving -avgsuriace inclined complementarilyl to the ,inclined sur-face of thefrecess, one Y ofsaidring sec' tions being provldedl Wlth: a5 tongue; 'and the'.v

other, with groove of greaterigwidth than tion1is lprovided .between said sections.-A u

In testimony whereof, I hereuntoatx'my signature 1n the presenceof two1w1tnes`ses;

said tongue, whereby;ajlost-motionfconnecf i 

